Fort Worth daily gazette. (Fort Worth, Tex.) 1882-1891, 1887-09-23

quantities. Heat the whole to red |
heat and keep hot from one to five houls,
according to size OF articles end depth OF |
temper desired; then remove tie cover
and dump the articles into the wate7
with the least possible exposure to the
air. This will harden to considerable
depth.
In pamphlet issued Iately b7 the
United States photographic CfIi ;e Lieu
tenant Underwood says that mineral Oils
are not so effective for use st sea as veg
etsble or animal. A comparatively small |
amount CT the right kind OF Oil, say two
quarts per hour, properly used, is suti-
ctent, he asserts, to prevent much damage
both to vessels and small boats In heavy !
seas. The greatest result from oil is OBJ
taiaed in deep water. In surf, or whefel
water is breaking on bar, the effect is T
not so certain, but even in this case oil |
may be of benefit, and its use is recon-
mended by Lieutenant Underwood He |
advises that in an attempt to board |
wreck the approaching vessel should use
the oil after running as close as possible [
under the lee of the wreck The wreck |
will soon idrift into the oil and then
| beat may be sent alongside of her.
To avoid the difficulties and inconven-
g strong company has been formed in
Paris, Industries states, for the supply Of
compressed air to users or dynamo
machines for electric lighting. A central
station has been provided, whose en-
gines OF 5000 aggregate horse power will
compress the sir for this purpose. The
mains are already being laid, and the
work is being pushed on with all possible
speed to furnish motive power ID the
theatres within the time allowed By the
government order for the substitution OF
electric light for gas. With electric
lamps and compassionate engines the
maximum OF safety from fire will have
been GStalned. The offices of the Figaro
sre TO be the first to be lighted by this
means. The scheme is to be extended to
the provinces, and Lille will probably De
the first town to adopt it.
Professor A. G. Bourne las made a
number Of experiments Of three species
Of scorpions found at M3dras, with the
object Of determining whether the popu-
lar notion that scorpions can commit sui
eide be true. he finds thstitis undoubt-
eddy physically Impossible for scorpion
10 sting itself in vulnerable place, and
wien one is placed in very unpleasant
circumstances it not untrequentlY lashes
its tail about, which causes actusl pene-
trstion OF the sting. But the poison of 8
scorpion Is quite powerless to kill the
same individual or another Of the same or
even of another species. Two scorpions,
when fighting, repeatedly sting one
another with little il any effect, the
, stronger killing the weaker by tearing it
! to pieces. The poison may be pressed
! out of the sting with the fingers or pair
i. Of forCeps, when it will be found to be g
: milky white fluid, with very punGent
q smell, resembling that Of formic acid.
Nickel steel is being m.de by the Ferro-
Nickel Society CT Paris in the folio wing
I manner: The plan has reference TO q
new sort of steel which is said to require
9 no hardening. 1t is composed OF soft
: iron, nickel, manganese metal, an oxide
# OF aluminium, wolfram and ferro-cyanlde
OF potassium. The steel is'produced By
h one melting. After the iron and nicke
: are meltedthe manganese orllts oxide and
O the ferro-cyanide of potassium are added
Il After c few minutes time, during which
the manganese and the other ingredients
+ ere melting and the reaction is tabiD.
:, place, the mass is stirred with q rGd-lo
II rod Of graphite, Whereup0n the aluminium
q is added and the stirring for short tim
: well melted again, when it can be Css
% mo Gny decided shape In the usual way
! the preCauton being observed to pain
,e the molds with coal tar, free from 81
W water OF ammonia, a1d to have them s.
is free from cir as possible,
st Nj. Ylllon, engineer and chemist, ai.e
y five months experimentation with va1iou
8. tannIns in order TO ascertain which i
in t{t.or no -
" ton of boilers, states in the ChropiQu
le Industrielle that the best results are give
I'd by RdmeX hymenosepalUm, q species 0
n dock that grows plentifully in sandy soil
in large territory on both sides Of III
to Rio Grande and from there norlhweT
IN over 8 large portion OF Western Tex
le as. The Dubious root called "ca
ne naigre'') Is the part uaGd. Tne roots g.
81 produced in clusters weighing sewers
s, pounds. They contain % per cent. {
le tannin, along with gum, starch and liz
re neous matter. A liquid extract is msd
from them which is purified with aCatat
N Of zinc in order 10 remove tha gum sn
es resiD, and brown LIQUID is 0btsine
Sc marking 20' B. OF this i've drains (seI
at enty-hve grains per hydrotimetric de
a gree of water and per cubic meter 90
be gallons) ere used.
The newly discovered substance, pyro
in fusin, contained IN nearly all pit an
Id bituminous Goals, 10 said by ProfessC
st Erlsngen to be one OF the most powerft
i antiseptics now known, a1d in this iat
er lies it's intense and rapid tar
y. ming properties, an effect whiC
renders II useful in the pre-
duction CT leather. In regard to il
quality as g preventive of fermentation
it is found that on contact of the artic
n with those skin and muscular tissue
which undergo decomposition it combine
OF with them with such an intensity TIL
e. after lying long time in water neitht
ne decomposition nor extraction of IL
e. pyrofusin results. II dry conditic
a pyrotusIn is 8 fine, non-trlturable sui
g, stance, without taste or smel
5i' insolubIe in water, not poisonou
le and in appearance like catech
er In CauStic ammonium, 20
er ash or soda solutions wet pyrofusin
al very soluble, and forms a deep, dsl
10 brown, homogeneous liquid. The il
no tense action of this peculiar substance
H. found TO shorten the process OF tsnnir
U leather very considerable; thus, takiT
the time Of tanning with pyroiusin
isl one, alum requires fourteen, tsnnic &c
Isl twenty eight; or for alum tanning fou
at teen times as many days are required